Ex vivo evaluation of artifacts mimicking fracture lines on cone-beam computed tomography produced by different root canal sealers
Article first published online: 27 APR 2013
© 2013 International Endodontic Journal. Published by John Wiley & Sons Ltd
International Endodontic Journal
Volume 47, Issue 1, pages 26–31, January 2014
How to Cite
Ex vivo evaluation of artifacts mimicking fracture lines on cone-beam computed tomography produced by different root canal sealers. International Endodontic Journal, 47, 26–31, 2014., , , , .
- Issue published online: 9 DEC 2013
- Article first published online: 27 APR 2013
- Accepted manuscript online: 9 APR 2013 03:59AM EST
- Manuscript Accepted: 3 APR 2013
- Manuscript Received: 17 JAN 2013
- cone-beam computed tomography;
- root canal sealer;
- root fracture;
- striking artifacts
To evaluate streaking artifacts produced by several root canal sealers on CBCT images with variations in voxel resolution.
Single-rooted premolars were selected and root filled using gutta-percha cones and one of the following sealers: Endofill, Sealer 26, Fillapex or AH Plus. Root canals filled only with gutta-percha were used as control. Scans of teeth using a small-volume CBCT were performed, and the images acquired were evaluated by two calibrated observers (k > 0.75). Artifacts were identified as streaks and dark bands on root dentine in axial slices with 2 voxel sizes (0.076 and 0.2 mm). Fisher's exact test (P < 0.05) was used to compare the presence/absence ratio of artifacts considering the factors ‘sealer’ and ‘voxel size’.
For the 0.20 mm voxel size, Sealer 26 had significantly more artifacts than Fillapex (P = 0.006) or AH Plus (P = 0.017). No differences existed between the sealers when the 0.07 mm voxel size was used. Sealer 26 (P = 0.042) and Endofill (P = 0.035) had significantly more artifacts in the 0.20 mm voxel size than with the 0.076 mm voxel size, whilst no difference was noted for other filling conditions.
The material used for root filling and the voxel resolution can influence the presence of streaking artifacts observed in CBCT images.